参数资料
型号: TLE8366EV
厂商: INFINEON TECHNOLOGIES AG
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, PDSO8
封装: GREEN, PLASTIC, MS-012, SOP-8
文件页数: 5/19页
文件大小: 1358K
代理商: TLE8366EV
TLE8366
Module Oscillator
Data sheet
13
Rev. 1.0, 2009-05-18
7
Module Oscillator
7.1
Description
The oscillator supplies the device with a constant frequency. The power switch will be switched on and off with a
constant frequency. The duty-cycle is derived from this frequency and some safety functions are synchronized to
this frequency.
The internal sawtooth signal used for the PWM generation has an amplitude proportional to the input supply
voltage (feedforward).
The turn-on frequency can optionally be set externally via the ’SYNC’ pin. In this case the synchronization of the
PWM-on signal refers to the falling edge of the ’SYNC’-pin input signal. In case the synchronization to an external
clock signal is not needed the ’SYNC’ pin should be connected to GND.
Leaving pin SYNC open or short-circuiting it to GND leads to normal operation with the internal switching
frequency.
7.2
Electrical Characteristics Module Oscillator
Electrical Characteristics: Buck Regulator
V
S = 6.0 V to 40 V, Tj = -40 °C to +150 °C, all voltages with respect to ground (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
7.2.1
Oscillator frequency
f
osc
330
370
420
kHz
V
SYNC = 0V
7.2.2
Synchronization capture range
f
sync
200
530
kHz
7.2.3
SYNC signal high level valid
V
SYNC,hi
2.9
V
1)
1) Synchronization of PWM-on signal to falling edge.
7.2.4
SYNC signal low level valid
V
SYNC,lo
0.8
V
1)
7.2.5
SYNC input internal pull-down
R
SYNC
0.60
1.0
1.4
M
V
SYNC = 5V
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